“…A feasible solution is to realize the recycling of wastewater via degrading the toxic pollutants in wastewater into non-toxic substances. Several advanced oxidation processes (AOP) are thus developed and applied in water purification, such as UV/H 2 O 2 , UV/O 3 , Fenton, photocatalysis, photo-Fenton, sonolysis, electrochemical oxidation, and piezocatalysis [1] , [2] , [3] , [4] . Among them, piezoelectric catalytic technology is a new type of AOP technology developed in recent years [5] , [6] , [7] .…”